20158749621

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{31547339}}^1$

素因数の和:31547416

約数の個数: 12

約数和(自身を含む): 29528310240

約数和(自身を除く): 9369560619

約数列:

[1, 3, 9, 71, 213, 639, 31547339, 94642017, 283926051, 2239861069, 6719583207, 20158749621]

約数ペア:

[(1, 20158749621), (3, 6719583207), (9, 2239861069), (71, 283926051), (213, 94642017), (639, 31547339)]